206431376 has 10 divisors (see below), whose sum is σ = 399960822. Its totient is φ = 103215680.

The previous prime is 206431373. The next prime is 206431397. The reversal of 206431376 is 673134602.

It can be written as a sum of positive squares in only one way, i.e., 205176976 + 1254400 = 14324^2 + 1120^2 .

It is a super-2 number, since 2×206431376² = 85227825994506752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206431373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6450965 + ... + 6450996.

Almost surely, 2^206431376 is an apocalyptic number.

It is an amenable number.

206431376 is a deficient number, since it is larger than the sum of its proper divisors (193529446).

206431376 is a wasteful number, since it uses less digits than its factorization.

206431376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12901969 (or 12901963 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 206431376 is about 14367.7199304552. The cubic root of 206431376 is about 591.0060170615.

Adding to 206431376 its reverse (673134602), we get a palindrome (879565978).

The spelling of 206431376 in words is "two hundred six million, four hundred thirty-one thousand, three hundred seventy-six".